Question

which option is used to specify the margin setting of our choice in Ms word​

Answer 1

Answer:

Set default margins

When you set a default margin, it's used when you create new documents. Go to Layout > Margins > Custom Margins. On the Margins tab select Default. Select Yes.

Explanation:

Answer 2

Answer:

Go to View > Print Layout. Go to Layout > Margins, select Margins, and then select Custom Margins. In the Top, Bottom, Left, and Right boxes, set the margins that you want, and then select Default. When you are prompted, select Yes to change the default settings for document layout.